CVE-2019-3016
MEDIUMCVSS 4.7/10EPSS 0.61%
Last modified
CVE-2019-3016 is a medium-severity vulnerability rated 4.7/10 on the CVSS scale. In a Linux KVM guest that has PV TLB enabled, a process in the guest kernel may be able to read memory locations from another process in the same guest. This problem is limit to the host running linux kernel 4.10 with a guest running linux kernel 4.16 or later. EPSS estimates a 0.61% chance of exploitation in the next 30 days.
Description
In a Linux KVM guest that has PV TLB enabled, a process in the guest kernel may be able to read memory locations from another process in the same guest. This problem is limit to the host running linux kernel 4.10 with a guest running linux kernel 4.16 or later. The problem mainly affects AMD processors but Intel CPUs cannot be ruled out.
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.16 |
| Linux | Linux Kernel | 4.10 |
References
- http://www.openwall.com/lists/oss-security/2020/01/30/4Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1792167Issue Tracking, Third Party Advisory
- https://git.kernel.org/linus/1eff70a9abd46f175defafd29bc17ad456f398a7Patch, Vendor Advisory
- https://git.kernel.org/linus/8c6de56a42e0c657955e12b882a81ef07d1d073ePatch, Vendor Advisory
- https://git.kernel.org/linus/917248144db5d7320655dbb41d3af0b8a0f3d589Patch, Vendor Advisory
- https://git.kernel.org/linus/a6bd811f1209fe1c64c9f6fd578101d6436c6b6ePatch, Vendor Advisory
- https://git.kernel.org/linus/b043138246a41064527cf019a3d51d9f015e9796Patch, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2020/01/30/4Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1792167Issue Tracking, Third Party Advisory
- https://git.kernel.org/linus/1eff70a9abd46f175defafd29bc17ad456f398a7Patch, Vendor Advisory
- https://git.kernel.org/linus/8c6de56a42e0c657955e12b882a81ef07d1d073ePatch, Vendor Advisory
- https://git.kernel.org/linus/917248144db5d7320655dbb41d3af0b8a0f3d589Patch, Vendor Advisory
- https://git.kernel.org/linus/a6bd811f1209fe1c64c9f6fd578101d6436c6b6ePatch, Vendor Advisory
- https://git.kernel.org/linus/b043138246a41064527cf019a3d51d9f015e9796Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-3016?
In a Linux KVM guest that has PV TLB enabled, a process in the guest kernel may be able to read memory locations from another process in the same guest. This problem is limit to the host running linux kernel 4.10 with a guest running linux kernel 4.16 or later. The problem mainly affects AMD processors but Intel CPUs cannot be ruled out.
How severe is CVE-2019-3016?
CVE-2019-3016 has a CVSS score of 4.7/10 (MEDIUM severity). The EPSS model estimates a 0.61% probability of exploitation in the next 30 days.
How do I fix CVE-2019-3016?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2019-3016?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST